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Cavity Technical Specification

IWLC2010 @ Geneva,Oct.2010. Cavity Technical Specification. IWLC2010 WG3 industrialization session H. Hayano. contents ; 1. Guide-line of the technical specification 2. Performance specification Procedure specification 4. Plug Compatibility in the specification

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Cavity Technical Specification

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  1. IWLC2010 @ Geneva,Oct.2010 Cavity Technical Specification IWLC2010 WG3 industrialization session H. Hayano

  2. contents; 1. Guide-line of the technical specification 2. Performance specification Procedure specification 4. Plug Compatibility in the specification 5. High-pressure-vessel Regulation 6. Cost down

  3. 1. Guide-line of the technical specification (1) Baseline: TESLA cavity with ILC-short length + TTF-III coupler *Baseline of Tuner : will be decided later, after performance & cost comparison (2) Performance:need to describe RF, thermal, Mechanical, Electrical -performance (3) Procedure: need to describe Fabrication, Treatment, Inspection, Test -Procedure (4) Plug-compatibility:describe clear boundary definition (5) High-pressure-vessel Regulation: need to describe how to clear it

  4. 2. Performance specification We have “specification table” which will bea start point.

  5. * yellow boxes indicate ‘not fixed’

  6. * yellow boxes indicate ‘not fixed’

  7. * yellow boxes indicate ‘not fixed’

  8. * yellow boxes indicate ‘not fixed’

  9. 3. Procedure specification (0) Flow-chart of cavity fabrication, treatment, inspection, and testing Fabrication Procedure Need to consider to follow XFEL Material specification : Nb, Nb-Ti alloy, and Ti (2) Machining procedure : Nb, Nb-Ti alloy, and Ti (3) Pressing procedure (4) Treatment (handling, cleaning, etching) during fabrication (5) Welding procedure : Nb, Nb-Ti alloy, and Ti (5) Dumbbell fabrication procedure (6) End-group fabrication procedure (7) Welding up into cavity (8) Inspection specification (material scan, dimension, surface, frequency, leakage, etc) (9) Helium Tank fabrication, welding to cavity (10) Tools and equipment (11) Laboratory responsibilities

  10. Treatment Procedure Cavity handling specification (2) EP treatment specification (3) Rinsing treatment specification (4) Heat treatment specification (5) Tuning specification for 9-cell filed, straightness and HOM notch frequency (6) Surface inspection procedure (7) Surface repair procedure (8) Clean-room handling procedure (9) Attachment parts specification (Flange, gasket, antenna, pickup, etc) (10) Tools and equipment for treatment (11) Laboratory responsibilities

  11. Test Procedure (Vertical Test) Vertical Test procedure (2) Support fixture specification (3) Cryostat specification (4) Instrumentation specification (5) Tools and equipment (6) Laboratory responsibilities

  12. 4. Plug Compatibility in the specification We have “Plug-compatibility specification” which will be a start point.

  13. Plug compatible conditions at Cavity package

  14. Cavity boundary cavity boundary (1) beam pipe port flange (2) coupler port flange (3) 4 support tabs (4) He pipes

  15. Input coupler boundary BCD: TTF3 coupler input coupler boundary cavity port flange (2) cold/warm part interface flange (3) cryostat vessel flange (4) waveguide flange

  16. 5. High-pressure-vessel Regulation Regulation application for only cavity helium vessel -> small volume (small P*V value) made application more simple Nb, Ti at 2K use ; not a matter (KEK case) Still we need to evaluate pressure-stress calculation, welding record and inspection, and pressure test. This is a calculation example

  17. 6. Cost down The specification should include a room for cost down. For example ; ( Just an idea ) Make Nb material -> 2.8mm sheet and make cell by press, make pipes by deep-drawing and burring. Make Nb HOM antenna by press-cut from sheet material, Make Nb-Ti flange by press-cut from sheet material, Make number of welding minimum Make machining minimum Make one parts fabrication in one company Make press-cut process in the material company

  18. Development of cavity technical specification document Need to develop; Flow-chart of cavity fabrication, treatment, Inspection and testing, Industry fabrication model. Need decision of open column of the specification table. Then, we can start writing down the document. end

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